Direct RUSTC_LOG (tracing/log) output to stderr instead of stdout.

eddyb · eddyb · commit 5ed2d4233472 · 2020-11-20T19:34:44.000+02:00
diff --git a/compiler/rustc_driver/src/lib.rs b/compiler/rustc_driver/src/lib.rs
@@ -1286,6 +1286,7 @@ pub fn init_env_logger(env: &str) {
     }
     let filter = tracing_subscriber::EnvFilter::from_env(env);
     let layer = tracing_tree::HierarchicalLayer::default()
+        .with_writer(io::stderr)
         .with_indent_lines(true)
         .with_ansi(true)
         .with_targets(true)

Original file line number	Diff line number	Diff line change
`@@ -1286,6 +1286,7 @@ pub fn init_env_logger(env: &str) {`
`1286`	`1286`	`}`
`1287`	`1287`	`let filter = tracing_subscriber::EnvFilter::from_env(env);`
`1288`	`1288`	`let layer = tracing_tree::HierarchicalLayer::default()`
	`1289`	`+ .with_writer(io::stderr)`
`1289`	`1290`	`.with_indent_lines(true)`
`1290`	`1291`	`.with_ansi(true)`
`1291`	`1292`	`.with_targets(true)`